Senate Resolution 66 (PDF), introduced in the United States Senate on February 4, 2015, would, if passed, express the Senate's support of designating February 12, 2015, as Darwin Day, and its recognition of "Charles Darwin as a worthy symbol on which to celebrate the achievements of reason, science, and the advancement of human knowledge."

House Resolution 67 (PDF), introduced in the United States House of Representatives on February 2, 2015, would, if passed, express the House's support of designating February 12, 2015, as Darwin Day, and its recognition of "Charles Darwin as a worthy symbol on which to focus and around which to build a global celebration of science and humanity intended to promote a common bond among all of Earth's peoples."

"A Billings legislator has reintroduced a bill that would encourage high school teachers to present evolutionary biology as disputed theory rather than sound science and protect those who teach viewpoints like creationism in the classroom," reports the Billings Gazette (January 29, 2015).